http://www.webmonkey.com/blog/Pack_Up_Your_Data_and_Leave_Whenever_You_Want__It_s_the_New_Rule_of_the_Cloud
The article talks about how google is trying to make it for anyone to “packup” their data and leave any of googles services. However, despite the fact its easy to export blogger and picasa, and gmail they still didn’t make note about weather or not the information is gone from their databse which raises some concern.